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<center><h2>SQLite GUI<h2></center>
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<h5>Help List</h5>
 <b>1. Update cannnot be performed on table without primary key. </b><br>
    The SelectCommand must also return at least one primary key or unique column. If none are present, an <b>InvalidOperation exception</b> is generated, and the commands are not generated.
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The alternative way is create select, insert and update command for that particular table.
<a href = "http://msdn2.microsoft.com/en-us/library/tf579hcz.aspx">Refer MSDN</a> .It will be available in the next version of SQLite GUI.
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